Solve for x and y.
7x-4
#
4y+8
24#
+
31

Answers

Answer 1

Answer:

7x-4 = -28

4y+8 = 4(y + 2)

Step-by-step explanation:


Related Questions

Convert from a fraction to a decimal 1/4

Answers

Answer:

Convert from a fraction to a decimal 1/4. 0.25

Answer:

0.25 is the correct answer of the question

Evaluate this exponential expression 7 • (6+2)^2 - 3^2=

Answers

Answer: 441

Step-by-step explanation:

[tex]7*(6+2)^2-3^2[/tex]

[tex]7*8^2-3^2[/tex]

[tex]7*64-9[/tex]

[tex]448-9[/tex]

441

Mr. Simmons figures he can paint his house in 5 days. If his son helps, together they can paint it in 2 days. How long will it take his son to paint the house if he works alone?

Answers

Answer:

3 hrs 20 min

Step-by-step explanation:

1/5 + 1/x = 1/2

x = 10/3

A shirt and a tie together cost $58 the shirt cost $30 more than the type what is the cost of the shirt and dollars

Answers

Answer:

Shirt + tie = $ 58

shirth = 30 more than that of tie

let the price of tie be X

therefore the price of shirt = 30 + X

30 + X + X = 58

30 + 2x = 58

2x = 58 - 30

2x= 28

x = 14

x + 30

= 14 + 30

Cost of tie = $14 Cost of shirt = $44

A bank pays interest rate of 15% per annum on the savings in a customers account. calculate the total amount in a customers saving account at the end of the year​

Answers

Answer:

Matty is the most precious ma ma ta the best I don't think so I can see good

why is the answer to this integral's denominator have 1+pi^2

Answers

It comes from integrating by parts twice. Let

[tex]I = \displaystyle \int e^n \sin(\pi n) \, dn[/tex]

Recall the IBP formula,

[tex]\displaystyle \int u \, dv = uv - \int v \, du[/tex]

Let

[tex]u = \sin(\pi n) \implies du = \pi \cos(\pi n) \, dn[/tex]

[tex]dv = e^n \, dn \implies v = e^n[/tex]

Then

[tex]\displaystyle I = e^n \sin(\pi n) - \pi \int e^n \cos(\pi n) \, dn[/tex]

Apply IBP once more, with

[tex]u = \cos(\pi n) \implies du = -\pi \sin(\pi n) \, dn[/tex]

[tex]dv = e^n \, dn \implies v = e^n[/tex]

Notice that the ∫ v du term contains the original integral, so that

[tex]\displaystyle I = e^n \sin(\pi n) - \pi \left(e^n \cos(\pi n) + \pi \int e^n \sin(\pi n) \, dn\right)[/tex]

[tex]\displaystyle I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n - \pi^2 I[/tex]

[tex]\displaystyle (1 + \pi^2) I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n[/tex]

[tex]\implies \displaystyle I = \frac{\left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n}{1+\pi^2} + C[/tex]

Greatest common factor
3m-12n

Answers

Answer:

3

Step-by-step explanation:

To find the Greatest common factor (GCF) of 3m-12n we find the highest letters and/or numbers that is a factor of both :

3m-12n

Both have a common factor of 3 :

[tex]\frac{3m-12n}{3} = m-4n[/tex]

m-4n cannot be simplified anymore so the gcf of 3m-12n is 3.

Hope this helped and have a good day

Assume a normal distribution and that the average phone call in a certain town lasted ​12 min, with a standard deviation of 2 min. What percentage of the calls lasted less than 6 ​min?

Answers

Answer:

I think it's 23 but I might be wrong

An investor earns 12.49 percent before tax and is subject to a 32 percent tax on such earnings. Calculate the investor's after-tax rate of return.

Answers

Answer:

How do you calculate after tax rate of return?

After-tax return on investment is the net return to the investor after ordinary income and capital gains taxes are subtracted. This is calculated as: After-tax return on investment = ((P1 - Po) (1 - Tc) / Po) + C1(1 - To) / Po.

How do you calculate before tax return?

The pre-tax rate of return is calculated as the after-tax rate of return divided by one, minus the tax rate. For example, suppose a person obtains a 4.25% reporting rate for ABC shares and is subject to a 15% income tax. Therefore, the pre-tax rate of return is 5% or 4.25%/(1 - 15%).

How do you calculate real rate of return after tax and inflation?

To calculate the real rate of return after tax, divide 1 plus the after-tax return by 1 plus the inflation rate. Dividing by inflation reflects the fact a dollar in hand today is worth more than a dollar in hand tomorrow. In other words, future dollars have less purchasing power than today's dollars.      

Hope this help's :)

Mario invested a certain amount of money in selling a fish balls. After 3 weeks, he counted his money and found out that he had 900 which was 2255 of what he originally had. How much did he invest?

Answers

Answer:

[tex]5.3 \times 105 - 2.4 \times 104[/tex]

Buying rental property is an investment option that carries a higher risk than some other options. However, the returns can be good. Assume you have purchased a single-
family home that you intend to rent for $850 per month. You will have the following expenses:
Monthly mortgage $390
Monthly insurance $60
Semiannual property taxes $340
Repairs (yearly estimate) $500
Monthly lawn care or snow removal $100
The return on investment for the property is
% (Round to one decimal place.)

Answers

Based on the expenses involved in running the property, and the rental amount, the return on the investment would be 31.1%.

What is the return on investment?

First find the amount earned per year:

= 850 x 12

= $10,200

The yearly expenses would be:

= (390 x 12) + (60 x 12) + (340 x 2) + 500 + (100 x 12)

= 4,680 + 720 + 680 + 500 + 1,200

= $7,780

The annual ROI is:

= (10,200 - 7,780) / 10,200 x 100%

= 31.1%

Find out more on Return on Investment at https://brainly.com/question/11913993.

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Solve for x
5x= -9
Give your answer as an improper
fraction in its simplest form.

Answers

We proceed to solve the equation:

[tex]5x \: = \: 9[/tex]

We divide by 5 the two members that make up the equation.

[tex]5x \: \div \: 5 \: = \: - 9 \: \div \: 5[/tex]

Since it is divided by itself, it is equal to 1.

[tex]x \: = \: - 9 \: \div \: 5[/tex]

We transform it into an improper fraction:

[tex]x \: = \: \boxed{ \bold{ - \frac{9}{5} }}[/tex]

MissSpanish

See attached. Thank you for your help.

Answers

Answer:

76

Step-by-step explanation:

when i text my boy he is ute

8. Find the area of the shaded region.

Answers

Answer:

7

Step-by-step explanation:

did the math

Answer:

Answer:4π

Step-by-step explanation:

As we know,

Area of circle=πr^2

=π(2)^2

=4π=12.57m^2

please help me!.. as fast as possible ​please help me at fastest possible

Answers

i. 97410 greatest, 01479 least
ii. 975310 greatest, 013579 least
iii. 98765420 greatest, 02456789 least

Change 0.45° to equivalent minutes and seconds. Round to the nearest second if necessary.

Answers

0.45° in minutes is 27.36 minutes and in seconds is 21.6 seconds.

Why is it necessary to divide decimal degrees by 60 to obtain minutes and seconds?

In a complete rotation, circles and spheres have 360 degrees. One degree is divided into sixty minutes, and one minute is divided into sixty seconds. You may see that your measurement is 91 full degrees plus 0.456 of a degree if you have 91.456 degrees.

How 0.45° is converted to equal minutes and seconds?

To convert 0.456 degrees to minutes, multiply 0.456*60 and you will get the answer as 27.36 minutes. You now have a total of 27 minutes and 0.36 of a minute.To express 0.36 minutes seconds in decimal form, multiply 0.36*60 to get 21.6 seconds. You can round up to twenty two seconds because your decimal 0.6 is bigger than 0.5.

To learn more about minutes and seconds conversion, refer

https://brainly.com/question/2144524

Of the equations listed below, which represent functions that are linear?
1.y = 3x
II. y = 3x²
III. y
A. Equations I and III
B. Equation I only
C. Equations II and III
D. Equation II only ​

Answers

Answer:

c i think

Step-by-step explanation:

c because jesus told it was c

What is the median of 3,4,5,5,7,8

Answers

the median of the set of numbers is 5.

Help, and if you can give me a step by step explanation

Answers

Answer:

the first option

Step-by-step explanation:

variability !

what does that word tell us ?

it means that there are more individuals differences.

you could also use "accuracy" as the opposite - we are aiming for the mean value ...

imagine some bow and arrow tournament.

who wins ?

the person with the highest accuracy across all the attempts (and that means the lowest variability in the results across all attempts relatively to the target center representing the predefined mean value).

now look at the graphic for neighborhood A.

and then for neighborhood B.

which one has the data points more clustered around the center (where the mean value is going to be) ? this one has lower variability than the one where the data points are having more than one cluster or are even all over the place.

remember, for the variability you have to add all the differences to the mean value. the smaller the differences to the mean value, the smaller the variability.

in neighborhood B almost all data points have a larger difference to the mean value.

so, the variability will be higher here.

100 Points and I will mark you brainiest if right.
What is 2 x 4 x 8 x 16 x 32 x 64 divided by 2^4

Answers

Answer:

131072

Step-by-step explanation:

Let's put it into expression form and simplify as much as possible :

[tex]\frac{(2)(4)(8)(16)(32)(64)}{2^{4} }[/tex] =

[tex]\frac{2097152}{16}[/tex] =

131072

Hope this helped and have a good day

Answer: 131,072

Step-by-step explanation:

2 x 4=8

8 x 8=64

64 x 16=1024

1024 x 32=32768

32768 x 64=2097152

[tex]2^{4}[/tex]=16

2097152/16= 131072

Find f(3) if
f(x)=x^3+2x^2-x-1

Answers

Answer:

41

Step-by-step explanation:

[tex]f(x) =x^3 +2x^2 -x -1\\\\f(3) =3^3 +2(3^2) -3 -1\\\\~~~~~~~=27+18-4\\\\~~~~~~~=27+14\\\\~~~~~~~=41[/tex]

what is the volume of the solid

Answers

Answer: 12 cubic yards

Step-by-step explanation:

Volume = (1/2)(3)(4)(2)=12

Find the product. 4.56 X 10=

Answers

Answer:

4.56 x 10 equals 45.6.

Step-by-step explanation:

When you multiply something by 10, you move the decimal place over to the right one, turning 4.56 into 45.6. I hope this helps! :)

can you please help me? 2.1.5

Answers

[tex]~Ab_1\\\\\\=\begin{bmatrix} -2&2\\ 1&4\\ 5&-3 \end{bmatrix}\begin{bmatrix} 3\\-2 \end{bmatrix}\\\\\\=\begin{bmatrix} -6-4\\3-8\\15+6 \end{bmatrix}\\\\\\=\begin{bmatrix} -10\\-5\\21 \end{bmatrix}[/tex]

5 Keisha needs postage stamps to mail
invitations for her birthday party to
9 friends. If stamps cost 45¢ each, how
much will it cost Keisha to mail the
invitations?
LA
$

Answers

Answer:

$4.05

Step-by-step explanation:

45 x 9 = 4.05

calculate the sum of the following series 17+51+153+…334611

Answers

Answer:

Ans=...334832 can be your questions answer

Find the value of x.
x
x = [?]

Answers

Answer:

Step-by-step explanation:

x + x + x = xxx

=> 3x = x³

=> x³ - 3x = 0

=> x(x² - 3)  = 0

=> x(x² - (√3)²) = 0

using a² - b² = (a + b)(a - b)

= x(x + √3)(x - √3) = 0

=> x = 0 , -√3 , √3

x = 0 , ±√3

Ashley has 100 books that she wants to give away at the rate of n books per week. Write a recursive function that represents the number of books Ashley has at any time.
The recursive function that gives the number of books Ashley has at any time is
=
, starting at
.

Answers

The recursive function that gives the number of books Ashley has at any time is f(t) = f(t-1) - n where f(0) =100

How to determine the recursive function?

The given parameters are:

Initial = 100

Rate per week, r = n

The initial number of books means that:

f(0) = 100

The rate of n means that Ashley has n less books each week.

So, we have:

f(t) = f(t-1) - n

Where t represents the number of weeks

Hence, the recursive function that gives the number of books Ashley has at any time is f(t) = f(t-1) - n where f(0) =100

Read more about sequence at:

https://brainly.com/question/6561461

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. What is the next number? 3 4 6 9 13 18 24

Answers

Answer:

3+1=4

4+2=6

6+3=9

9+4=13

13+5=18

18+6=24

24+7=31

Step-by-step explanation:

I'm just a smart guy

The answer is 31 :)))))))))))))))))))))))))))

Erica earned a total of $67,250 last year from her two jobs. The amount she earned from her job at the store was $1,250 more than three times the amount she earned from her job at the college. How much did she earn (in dollars) from her job at the college?

Answers

Step-by-step explanation:

x = earnings from the store

y = earnings from the college

x + y = 67,250

x = 3y + 1,250

now we use the identity of the second equation in the first equation :

(3y + 1,250) + y = 67,250

4y = 66,000

y = $16,500

x = 3y + 1,250 = 3×16,500 + 1,250 = 49,500 + 1,250 =

= $50,750

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